If we know that for a certain gas 2/5 of the total kinetic energy of the molecules is rotational and 3/5 is due to the motion of their centres of mass. a. calculate the average kinetic energy due to the motion of the centre of mass of one of these molecules at 300 k. b. if the temperature is to be increased by 20â°c, how much energy must be supplied to a mole of the gas to produce this temperature rise at constant pressure?

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s

Water moves to the top of tall trees because of a) capillary action b) surface tension c) capillary action and evaporation d) vapor pressure

This battery has a difference in potential energy between the positive terminal and negative terminal which units express this difference in energy